svcadm(1M)을 검색하려면 섹션에서 1M 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
hash(1)
hash(1) User Commands hash(1)
NAME
hash, rehash, unhash, hashstat - evaluate the internal hash table of
the contents of directories
SYNOPSIS
/usr/bin/hash [utility]
/usr/bin/hash [-r]
sh
hash [-r] [name]...
csh
rehash
unhash
hashstat
ksh88
hash [name]...
hash [-r]
DESCRIPTION
/usr/bin/hash
The /usr/bin/hash utility affects the way the current shell environment
remembers the locations of utilities found. Depending on the arguments
specified, it adds utility locations to its list of remembered loca‐
tions or it purges the contents of the list. When no arguments are
specified, it reports on the contents of the list. The -r option causes
the shell to forget all remembered locations.
Utilities provided as built-ins to the shell are not reported by hash.
sh
For each name, the location in the search path of the command specified
by name is determined and remembered by the shell. The -r option to the
hash built-in causes the shell to forget all remembered locations. If
no arguments are given, hash provides information about remembered com‐
mands. The Hits column of output is the number of times a command has
been invoked by the shell process. The Cost column of output is a mea‐
sure of the work required to locate a command in the search path. If a
command is found in a "relative" directory in the search path, after
changing to that directory, the stored location of that command is
recalculated. Commands for which this will be done are indicated by an
asterisk (*) adjacent to the Hits information. Cost will be incremented
when the recalculation is done.
csh
rehash recomputes the internal hash table of the contents of directo‐
ries listed in the path environmental variable to account for new com‐
mands added.
unhash disables the internal hash table.
hashstat prints a statistics line indicating how effective the internal
hash table has been at locating commands (and avoiding execs). An exec
is attempted for each component of the path where the hash function
indicates a possible hit and in each component that does not begin with
a '/'.
ksh88
For each name, the location in the search path of the command specified
by name is determined and remembered by the shell. The -r option to the
hash built-in causes the shell to forget all remembered locations. If
no arguments are given, hash provides information about remembered com‐
mands.
OPERANDS
The following operand is supported by hash:
utility The name of a utility to be searched for and added to the
list of remembered locations.
OUTPUT
The standard output of hash is used when no arguments are specified.
Its format is unspecified, but includes the pathname of each utility in
the list of remembered locations for the current shell environment.
This list consists of those utilities named in previous hash invoca‐
tions that have been invoked, and may contain those invoked and found
through the normal command search process.
ENVIRONMENT VARIABLES
See environ(7) for descriptions of the following environment variables
that affect the execution of hash: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES,
and NLSPATH.
PATH Determine the location of utility.
EXIT STATUS
The following exit values are returned by hash:
0 Successful completion.
>0 An error occurred.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Availabilitysystem/core-os _ Interface StabilityCommit‐
ted _ StandardSee standards(7).
SEE ALSO
csh(1), ksh88(1), sh(1), attributes(7), environ(7), standards(7)
Oracle Solaris 11.4 12 Jul 2011 hash(1)